/Engine/Source/Runtime/Engine/Classes/Camera/CameraShakeBase.h
Note that this modifies the result and makes it "absolute".
static void ApplyPlaySpace ( ECameraShakePlaySpace PlaySpace, FMatrix UserPlaySpaceMatrix, const [FMinimalViewInfo](API\Runtime\Engine\Camera\FMinimalViewInfo) & InPOV, [FCameraShakeUpdateResult](API\Runtime\Engine\Camera\FCameraShakeUpdateResult) & InOutResult )